Sakura Kirishima decided to start dieting and strength training to achieve an even sexier, more incredible physique. But finding it hard to stick to it alone, she invites you, her boyfriend, saying, "Wanna try doing it together?" Your answer is an obvious "OK!" As the two of you tone your bodies through exercise, the mood quickly turns hot and steamy. Sakura, fully charged and eager, declares, "Today, I'm going to be the aggressive one!" Her long, skillful tongue lavishing attention on you creates nothing short of a breathtaking sight. While you're completely captivated by Sakura's erotic charm and beauty during training, a strange phenomenon suddenly occurs...